Title :
Two-dimensional time-dynamic simulations of DFB lasers and MOPAs
Author :
Heubeck, Britta ; Pflaum, Christoph
Author_Institution :
Dept. of Comput. Sci., Univ. of Erlangen-Nuremberg, Erlangen, Germany
Abstract :
Due to the lateral structure of Distributed Feedback lasers (DFB) and Master Oscillator Power Amplifiers (MOPAs), the one-dimensional classical Transfer Matrix Method (TMM) as well as similar one-dimensional methods do not lead to satisfactory simulation results. Therefore, we present a two-dimensional simulation technique based on Trigonometric Finite Wave Elements (TFWE) - a generalization of the TMM in two or three dimensions - that solves the time-dependent wave equation. By coupling the wave equation with a temperature and a drift-diffusion model, we can simulate the time-dynamic behavior of DFB lasers and MOPAs. Furthermore, by Fourier transformation, we can investigate which modes and which frequencies appear. In this way, the influence of the injected current and of the stripe width on the resulting modes and on the output power can be analyzed in detail.
Keywords :
Fourier transform optics; amplifiers; distributed feedback lasers; finite element analysis; laser cavity resonators; laser modes; oscillators; power amplifiers; solid lasers; DFB lasers; Fourier transformation; MOPAs; distributed feedback lasers; drift-diffusion model; laser resonator; master oscillator power amplifiers; one-dimensional classical transfer matrix method; time-dependent wave equation; trigonometric finite wave element technique; two-dimensional time-dynamic simulations; Distributed amplifiers; Distributed feedback devices; Laser feedback; Laser modes; Optical coupling; Oscillators; Partial differential equations; Power amplifiers; Power lasers; Temperature;
Conference_Titel :
Numerical Simulation of Optoelectronic Devices, 2009. NUSOD 2009. 9th International Conference on
Conference_Location :
Gwangju
Print_ISBN :
978-1-4244-4180-8
DOI :
10.1109/NUSOD.2009.5297220
